Photographic developing apparatus.



No. 530,500. Y Patented Aug. a, |809.

. y .1. K. GRAEME. n l PHOTOGRAPHIC DEVELOPING APPARATUS.

(Application led June 12, 1899.)

(No Model.)

Il |||llI R l l' l f l fl f I 0 Eire/d?? 'g' m mww JOHN K. GRAEME, OF NVASHING'ION, DISTRICT OF COLUMBIA.

fPHopToeRAPl-no DEvLoPlNG APPARATUS.

sEFIcATIoN forming part of Letters Patent No. 630,560, dated August s, 189e.

rlp-nation nea frm 12, 1899. seni No. 720,209. er@ modem To all whom it pta/y concern:

Be it known that I, JOHN K. GRAEME, a citizen of the United States, residing at Vashington, District of Columbia, have invented a Developing-Box, of which the following is a specification, taken in connection .with the accompanying drawings, of which- Figure 1 is a perspective view, and Fig. 2 a vertical central section, of the device.

The object of my invention is to provide a developing-box in which thedevelopment of photographic lms can be effected, and is especially adapted for use in warm weather, at which time great difficulty is experienced in retaining the emulsion upon its support or base when the work of developing said ilmA is attempted.

The apparatus consists of three boxes. A is the inner box, holding ice for cooling the developer, serving as a support for lm E when the latteris developed. B is the box in which the developer is placed and cooled. C is the outer box, which acts as a support for boxes A and B and contains ice for cooling the developer in conjunction with box A.

D are friction-rollers around which the film E is drawn in its passage through the developer.

F is an outlet for the water from the ice in box C.

Boxes A and B can be removed from box C, and the latter can be used for washing films or photographs.

I-I are holes whereby the box C can be fastenedto a table or shelf.

I I are headed pins secured upon the inner side of the box C near the top edge, which engage with bayonet-shaped slots or openings I', formed near the top of boxes A and B, thus permitting not only the removal of saidboxes when necessary or desirable, but the tilting of box A, thus enabling the operator to adjust thereunder said film.

G is a hook adapted to engage with one of the pins I, its function being to retain box A in its normal position with respect to its supporting-box B. When it is desired to tilt box A in order to place the film thereunder, the hook G is raised from engagement with the pin I and the said box disengaged from the pins, after which a rengagement thereof with the pin adjacent to hook G is made and the hook again brought into engagement with the pin, whereupon the box is tilted and the film introduced thereunder. After this has been accomplished the box is again engaged with both of the pins through the slots above described. Tlie hook is again brought into engagement with its pin, whereupon the film may be drawn through the developer and the desired work thereon be easily accomplished.

In the practicaloperation of the device in the development of the films I pour the developer in box B and put ice in boxes A and C, then tilt box A upon I as a pivot, insert the film E face or coated side down under box A, then lower the latter into box B, fasten box A with hook G, and then draw the film E up and down until developed.

`What I claim, and desire to secure by Letters Patent is l. In a device for developing iilms, the combination with a support and a box secured thereon adapted to contain the developer under which the film to be developed is drawn, of an ice-box for' cooling the same substan tially as described.

2. Ina device for developing lms, the combination with a support and a box pivoted thereon adapted to contain the developer, under which the film is drawn, of a second box,

and an ice-box for cooling the same, as and for the purpose set forth.

3. In a device for developing films, the combination with a box under which the film is drawn, of a second Vbox outside the same, adapted to contain the developer and an outside box adapted to contain a cooling medium for the developer and upon which box the two rst-named boxes are su pported,as shown and described.

4. In a device for developing lms, the combination with a box adapted to contain a cooling medium and under which the lm is drawn, of a second box outside the same, adapted to contain the developer, and an outside box adapted to contain a cooling medium for the developer, and upon which box the two first-named boxes are supported substantially as described.

5. In a device for developing films, the combination with the box C adapted to contain a IOO cooling medium, and Ishe box B supported thereonadapted to cont-ain the developer, of the box A also supported on box C, said box A adapted to receive thereunder thev lm to be developed.

6. In a device for developing ilms the combination with the box C, adapted to contain ice, and having headed pins secured upon the inner side near the top edge thereof, and the box B having bayonet-shaped slots near its top edge to'engage said pins adapted to contain the developer, of the box A also formed with bayonetslots for engagement with the pins and having friction-rollers over which the lnl is drawn in its passage through the developer as shown-and described.

7. In a devi-ce for developing films the cornbination with the outer box C, the middle box B adapted to contain the developer, of the inner box A supported upon said box C and adapted to be foilted thereon for the adjustment ofthe lm passing thereumier,`

saidboxes vA and C, adapted to contain zi cooling medium for the developer as set forth.

y JOHN K" GRAEME. Witnessesi l D. C. TURNER, M. C. BROWN. 

